least desirable of endocrine instabilities because of the concomitant mental effects. Even from the purely selfish point of view, the standpoint of enlightened selfishness, the post-pituitary type must beware of excesses. For disturbances of menstruation, psychic fears, anxieties, states of suspicion and obsession, various pains are among the penalties. A period of post-pituitary excess as an effect of disease, pregnancy, or the rapid life, may be followed by post-pituitary deficiency as a result of exhaustion of the gland. The girl or woman then becomes fat and suffers from headaches (the fair, fat and forty type) yet retains a certain capacity for enjoyment which enables her to continue gay, happy and gentle, kind, interested. So she contrasts with the thyroid deficient who gets fat, but also dull, stupid, even morose. The masculine pituitary personality, the man with a dominant anterior pituitary gland in a roomy sella turcica with plenty of space to grow in, is the ideal virile type. They are generally tall (unless the growth of the long bones was checked too early by a social precocity of the testes) with a well-developed strong frame, large firm muscles, and proportionately sized hands and feet. The head is of the marked dolichocephalic type, flattened at the sides, face is oval more or less, with thick eyebrows, eyes rather prominent, nose broadish and long, lower jaw prominent and firm. Prominent bony points like the cheek bones, the elbows and the knees, the knuckle joints of the hands and feet. The teeth are large, especially the upper middle incisors, and they are usually spaced. The arms and legs are hairy. High grade brains, the ability to learn, and the ability to control, self-mastery in the sense of domination of the lower instincts and the automatic reactions of the vegetative nervous system, the rule by the individual of himself and his environment are at their maximum in him. The ante-pituitary personality is educable for intelligence, and even intellect, provided the proper educational stimulus is supplied. Men of brains, practical and theoretical, philosophers, thinkers, creators of new thoughts and new goods, belong to this group. The distinction between men of theoretical genius, whose minds which could embrace a universe, and yet fail to manage successfully their own personal everyday lives, and the men of practical genius, who can achieve and execute, the great engineers, and industrial men lies in the balance between the ante-pituitary and the adrenal cortex primarily. Men like Abraham Lincoln and George Bernard Shaw belong to this ante-pituitary group.